The invention discloses a
flame-retardant color master batch applicable to
polyester filaments. A preparation process for the
flame-retardant color master batch comprises the following steps: A, material weighing; B, material mixing; C,
extrusion; D,
granulation; and E, packaging after inspection is passed. In the step A, weighed raw materials for the
flame-retardant color master batch are composed of, by
mass, 10-40 parts of PET, 10 to 30 parts of PBT, 20 to 60 parts of a flame retardant, 0 to 30 parts of toner and 0 to 10 parts of a dispersant, wherein the PET is
bottle-grade chips or superbright chips; the PBT is an
engineering plastic; the flame retardant is a pure small-molecular
phosphate compound; the toner is an inorganic
pigment or
solvent dye of various colors; and the dispersant is polar
wax. According to the invention, the flame-retardant color master batch is composed of desired parts by
mass of the PET, the PBT, the flame retardant, the toner and the dispersant and are prepared through material weighing, material mixing,
extrusion,
granulation and the like, so the
production quality of the flame-retardant color master batch can be improved, and the interests of companies are guaranteed.